| 摘要 |
Method of warning an automobile driver in case of danger of a collision with the vehicle driving in front when the distance to the vehicle in front decreases quicker than a preset limit, by optically sensing, registrating and monitoring a characteristic part image of a vehicle driving in front, such as the shade of the vehicle on the street body, a characteristic picture of the rear part of a vehicle, a horizontal line along the vehicle underside, or such; transmitting the optically registered data to data in a microprocessor, monitoring the movements of the part image up, down, to both sides and diminishing and increasing the size of same; and by transmitting a signal to an alarm device if the part image picture becomes larger than a certain minimum size and at a preset speed. A device for warning an automobile driver comprising a microprocessor being adapted to receive signals from an optical registration unit directed towards the traffic situation in front, the microprocessor being adapted to recognize a characteristic image of a vehicle driving in front, the microprocessor being adapted to transmit a signal to an alarm device if the size of the picture increases from a preset minimum size at a preset minimum speed and the alarm device thereby transmitting a signal to the driver of the vehicle.
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